"The Heartbreak Dog" is the sixteenth episode of the fourteenth season of the animated sitcom Family Guy, and the 265th episode overall. It aired on Fox in the United States on March 13, 2016, and is written by Lew Morton and directed by Brian Iles.

The title is a reference to the 1972 film The Heartbreak Kid.

The Spooner Street neighbors celebrate Bonnie Swanson's 46th birthday at the Swanson residence. Joe shows a slideshow of the place he and Bonnie went on their honeymoon when he could still walk but, to Bonnie's discomfort, he also shows photos of when they went back, when Bonnie had a terrible time due to Joe's disability. After using the bathroom, Brian finds Bonnie crying in her room, where Bonnie tells him that she's upset that she has taken care of Joe half her life. After sharing a tender moment, Brian and Bonnie have a kiss, which they regret immediately after. Brian confides the infidelity with Peter, who swears to keep quiet. Joe and Bonnie come to the Griffins' for game night, where they participate in charades. After Bonnie leaves to get more wine, she finds Brian on his laptop and they have an awkward conversation, with Brian lying about telling anybody, and it ends with them agreeing that their romance won't work out.

However, when Brian and Bonnie head back to the living room, Peter's guessing of the charades cause him to accidentally reveal the affair, shocking everybody. Brian visits Joe the next day and tries to clear the air, and Joe at first seems to be OK, but a tow truck removing his car proves otherwise. Joe then proceeds to take additional revenge schemes on Brian like drugging him with a spiked wine followed by Joe putting shoes on Brian and uploading the footage on the internet.

Meanwhile, Meg is sent to be a volunteer at the Quahog Retirement Home as part of the school's community service project held by Principal Shepherd. Meg is annoyed by a resident there named Mrs. Parkhurst. While attending to the nagging woman's needs, Meg steals a golden brooch in revenge and decides to steal from the other residents there, since they treat her badly as well. At the Griffins' house, Chris eventually finds out about this and is at first appalled by it, but eventually decides to get in on the action. One of their plans involved tricking an elderly lady into thinking that she has died and entered Heaven.

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